Pcters



2 Sheets-Sheet 1.4

-(No Model.)

W. P. CUMMINGS.

AUTOMATIC GAR BRAKE.

No. 358,547. Patented Mer. l, 1887.

wth/moo@ (No Model.) 2 Smets-sheet 2. W. F. CUMMINGS.

AUTOMATIC GAB. BRAKE. Y No. 358,547. PatentedMaJr. l, 1887.

with@ one .n nauw/l l'o z UNiTnn drains WILLIAM F. OUlVIlVIINGS, OFBRADFORD, VERMONT.

AUTOMATIC C-iR--BRAKEl SPECIFICATION forming'part of Letters Patent No.358,547. dated March 1, 188'?. Application filed January 13, 1867.Serial No. 224,230. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM F. CUMMINGS, a citizen of the United States,residing at Bradford, in the county of Orange and State of Vermont, haveinvented certain new and useful Improvements in Automatic Car-Brakes;and I hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to Which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and 'ligures oi'reference marked thereon, which form a part of this specification.

This invention relates to automatic carbrakes; and it consists in thenovel construction and combination of the parts, hereinafter fullydescribed and claimed.

In the drawings, Figure l is a plan view, from above, of portions of acar-truck provided with a brake according to this invention. Fig. 2 is alongitudinal vertical section taken on the line a* x in Fig. l.

Ais the lower part of a car-frame, provided with axle-boxes of ordinaryconstruction.

B are the car-wheels, secured upon axles Z, journaled in the said boxes.

C is ashort sleeve having a clutch, c, secured upon the axle b. Thissleeve is preferably made in halves longitudinally, held together by theband c and screws e2, so that it may be applied to any axle withoutremoving the earwheels.

D is a long sleeve, which is mounted loose upon the axle b. This sleeveis also preferably made in halves longitudinally, which halves are heldtogether by the bands d and screws d. One end of the sleeve D forms aclutch, d2, which engages with the clutch o when desired. A portion ol'the sleeve D forms a barrel, di, for the brake-chain to wind on. Theopposite end of the sleeve is provided with the face-cam d", having thepocket d5, the use of which will be more fully explained hereinafter,and d6 are collars on the sleeve for the end of the clutch-lever to bearagainst.

E is the clutch-lever pivoted in the bracket e, which is secured to thecenter beam, a, of the frame. The lever E is provided with a forked end,e', which engages between the collars d", and e2 is a spring secured tothe carframe, and to the opposite end of the lever E, for holding theclutches apart.

F is a hand-lever pivoted to the frame, and connected to the brake-leverby the eyebolt f and linkf, so that it canbe worked from the upper partof the car.

G is a hand-lever, which may be pivoted to any part of the side frame ofthe ear, or to another car on the train, or to the engine. This lever Gis connected to the lever F or to the lever E direct by means of thecord or chain g which passes over the pulley g, pivoted in the bracketg2 on the car-frame.

H are the curved brake-blocks, provided with round stems 7a, which arecarried by the plates 7L h2, -secured to the brake-beams I. The platesIt are provided with eyes ha, which are pivoted on the hooks ht,projecting from the ear-frame. One brake-beam Iis provided with a hook,t', connecting with one end of the brakerod J, and the other brake-beamis provided with abracket, fi, in which alever, i2, is pivoted. One endof the lever 2 connects with the other end of the brake-rod J, and theother end of the lever is connected tothe barrel d3 by means of thebrake-chain K.

M is the clutch-disengaging block, which is securely bolted to thecar-frame. Nis a spring, bolted to the block M, and carrying thelatchpin a on the end of it, which projects through the hole m in thesaid block.

The action of the brake mechanism is as follows: When the lever F or Gis moved by hand so as to move the lever E for a sufficient distanceagainst the tension of the spring e?, the forked end of the lever Ecauses the sliding clutch to engage with the clutch c, which is securedon the axle. The rotary motion of the axle is communicated to the barreld3, which winds up the brake-chainK, and the brake-beams, together withthe brake-blocks, are drawn together by means ofthe rod J and lever Vhenthe barrel d has made :nearly a full revolution and the brakes are hardon, the spring latch-pin falls into the pocket This pocket is situatedin the high part of the face of the cam di, which comes against thedisengaging-block M as the cam revolves with the axle. The pressure ofthe block M against the cam-face draws back the sleeve D and dis- IOOengages the clutches directly the latch-pin has fallen into the pocket,so that no more of the brake-chain is .Wound upon the barrel, although.the axles continue to revolve, and the brake-blocks are held hardagainst the Wheels by the spring latch-pin. The brakes are relieved bysimply letting go the hand-lever F or G. The spring e2 moves the lever Eso that the camface slides back clear of the latch-pin, and the tensionin the brake-chain and its attachments moves the cam, so that the pockets clear of the pin, and the brake mechanism is ready to be used again.

What I claim is- 1. In an automatic car-brake, the combination of aclutch secured to the car-axle, a sleeve sliding on the axle andprovided with a clutch, a winding-barrel for the brake-chain, and a camfor disengaging the said clutches, a lever for operating the slidingsleeve, and a disengaging-block for the said cam to bear against,substantially as and for the purpose set forth.

2. In an automatic car-brake, the combination of a clutch secured to thecar-axle, a sleeve sliding on the axle and provided with a clutch, aWinding-barrel for the brake-chain, and a cam for disengaging the saidclutches, having the pocket d5 in it, a lever for operating the slidingsleeve, a disengaging-block for the said cam to bear against, and aspring-latch secured to the said block and engaging with the pocket inthe cam, substantially as and for the purpose set forth.

3. In an automatic car-brake, the combination of the revoluble axle, aclutch secured to the axle and made in halves longitudinally, the band cand screws connecting the halves of the clutch, the sliding sleeve madein halves longitudinally and provided With the clutch d2, thebrake-chain barrel, and the cam d", having pocket d5, the bands d, andscrews d', the disengagingbloek M, the spring latch-pin, and a lever foractuating the said sliding sleeve, substantially as and for the purposeset forth.

4. In an automatic car-brake, the combination of a revoluble axle, aclutch secured to the axle, the sliding sleeve provided With the clutchd2, barrel d3, and cam dt, havingpocket d, the disengagingblock M, thespring latchpin, the clutch-lever E, provided with the spring e2, ahand-lever connected to the clutchlever, the brake-beams provided withbrakeblocks and pivoted to the frame, the brakerod, the brake-chain, andthe lever i2, pivoted ou one of the brake-beams, substantially as andfor the purpose set forth. f

5. In an automatic car-brake, the combination of the brake-beamsprovided with plates h h2, and pivoted'to the car-frame, the brakeblockshaving stems h, the lever t2, pivoted on one of the brake-beams, thebrake-rod connecting said lever With the other brakebeam, thebrake-chain K, the sliding sleeve provided with clutch d2, barrel d, andcam (1*, having pocket d5, the clutch secured to the axle, thebrake-lever E, provided with the spring e2, a hand-lever connected tothe brake-lever, the disengaging-block M, and the spring latch-pin,substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

VILLIAM F. OUMMINGS.

